Pneumatic suction-pump.



D. T. WILLIAMS. PNEUMATIG SUGTION PUMP. APPL1qA'TIoNr1LBDooT.17

Patented May 1.1, 1909 cy has Nmmls PErERs Cc.. wAsHlNamN, n

UNITED sfrAfrEsieAmENfr OEEICE.

DAVID T. WILLIAMs, OE PAfrERsoNN-EW JERSEY, AssIGNoRTO VACUUM ENGINEERING COMPANY, or NEW YORK, N. Y., A CORPORATION or NEW YORK.

PNEUMATIO Asfo',o'IroN-IRUIi/Ir.

Specification o' Letters Patent.

Patented May 11, 1909.

AppIcaton ied October 17, 1908A. Serial No; &58,151.

To all whom t may concern:

Be it known that l, DAvInT. WILLIAMS, a

British subject, residing at Paterson, inthe county of Passaic, State of New Jersey, have invented certain new and useful Improvements in Pneumatic Suction-Pumps, of whichJ ln pneumatic cleaning systems heretofore in operation it has been necessary either to completely separate the dust and dirt from the air before passin the air through an ordinary suction pump, y means of dry separators and wet separators, or in other words by passing the air through va chamber in which the main portion of the dust and dirt may collect, and then by removing the remainder of the dust and dirt byabsorption in somev suitable liquid. On the other hand, when the dust and dirt are passed directly through the suction pump with the Water supplied to*` the saturation chamber, it has been usual to provide a pump of special construction having protecting surfaces, such as by lining the inner surface of the cylinder with brass or similar material.

By the use of the device comprising this invention, I am enabled to'usea pump for producing an air vacuum through which air alone passes, thereby eliminating the use of a brass or other lining. In addition to the pump for producing an air vacuum, I use anauxiliary pump connected with the chamber through which the air or air and water withdrawn from the'cleaning implements passes. This pump connects with the chamber containing the water or other liquid for absorbing the dust and dirt at the level at which it is desired to maintain such liquid. This auxiliary pump for the water may be of the well known plunger or displacement type in which the piston enters purposes in the air pump, which is an important` advantage, in v1ew of the double vfunction served by the auxiliary water pump. For a'detailed description of one form of my invention which l at present deem prefg erable, reference may be had to the following specification and the laccompanying; drawings forming a part thereof, in which- Figure 1 ,is a side elevation of a pump embodying the improvements which are the subject-matter of this invention, and 2 is a vertical sectional view of the same ta en substantially upon the line A A.

The numeral 1 indicates the cylinder of thepump, and the numeral 2 the ends thereof which contain valve chambers and suitable water jackets for the cylinder heads and valve chambers.

The numeral 3 indicates the auxiliary water pump of the plunger or displacement type, and having the piston or plunger 4 entering the pump chamber 3 through the usual stuffing box 5.

The numeral 6 indicates the absorbing or saturating champer having a central Outlet conduit 7 connecting with the air-pump cylinder 1 at its central portion, as indicated in Fig. 1. f The chamber 6 is provided with a suitable baffle-plate or plates such as indicated by the numeral 3, and also with a float valve 9 which is connected with the' water inlet pipe 10 so that a constant level of the water ismaintained. Theinlet pipe 11 for the saturating chamber enters the casing of the saturating chamber at its upper portion, and the interior of the chamber is provided with means for causing air to flow beneath the surface 'of the liquid and through the baffle-plates therein, such as by the use of the partition 12. The pipe 13, which enters the chamber 6 at the level of the water therein, connects with the pump 3 through which the water passes, being then forced through the pipe 14 and the branches 15 and 16 into the water jackets contained in the heads 2 of the pump cylinder 1. At points in the cylinder heads separate from the ends of the branches 15, and 16 I introduce outlet pipes 17 and 18 which may pass to any suitable discharge receptacle, such as a sewer or drain. v

The air suction pump is preferably of the horizontal type having valved outlets in the cylinder heads and an inlet pipe communieating with the central portion of the cylinder, so that the piston which occupies substantially one half of the volume or interior of the cylinder may be covered and uncovered by the piston and act as a valve. However I do not Wish to be understood as being limited to the use of this particular type of air pump.

The auxiliary Water pump 3 may be operated in any suitable manner, such as by connection with an eccentric 19 on the driving shaft 20 of the main air pump.

In operation it will be seen that the air containing the dirt, or the dirt, air and water, when the scrubbing process is used, from the vacuum cleaning implements, passes through the screw pipe or conduit 11 into the saturating chamber 6. T he air leaves this chamber through the conduit 7, passing through the pump cylinder 1, whence it is discharged into the atmosphere, or into any suitable receptacle or muiiler (not shown) by a pipe 21. The chamber 6 being iilled with Water or other liquid up to the level of the end of the pipe 3 absorbs the dust drawn through the same by the main air pump, thereby causing the dust and dirt to become deposited in said chamber. rl`he Water in the chamber being continually agitated by the passage of the air, prevents the dirt from settling to the bottom, and the dirt is therefore thoroughly dissolved and drawn ofi with the water through pipe 13, its level being maintained sutliciently igh through the action of the float valve 9 to cause a constant renewing of the water. rThis Water, after passing through the pump cylinder 3 enters the water jackets of the cylinder heads, thereby keeping them cool and counteracting the eilect of the compression of the air being driven out of the cylinder of the air pump.

Having thus described this form of my invention., I do not Wish to be understood as being limited to the exact details of form and arrangement of parts set forth, for various changes may be made by those skilled in the r art without departing from the spirit and scope of my invention.

lVhat l claim and desire Letters Patent is:

1. ln a pneumatic cleaning apparatus, an air pump, a water pump, an absorbin chamber, a conduit leading from the upper portion of said absorbing chamber to said air pump, and a conduit leading from a point above thc bottom ol said absorbing chamber but below the end of the iirst-named conduit, to said water pump.

2. In a pneumatic cleaning apparatus, an air pump, an independent water pum i, an absorbing chamber, means for suppllying water to the absorbing chamber, said airpump being connected with said absorbing chamber at a point above the level ol thc liquid therein, and the water pump being connected with said absorbing chamber at the level of the liquid therein.

3. ln a pneumatic cleaning apparatus, an air-pump having cooling` jackets, an independent water pump, an absorbing chamber, said air-pump being` connected with said absorbing` chamber to withdraw air therefrom and said Water pump being connected with said absorbing chamber to witlulraw water therefrom, the outlet of said water pump being connected with said cooling jackets.

fr. ln a pneumatic cleaning apparatus, the combination oi a double acting air pump, a Water pump ol the plunger or displacement type, and an absorbing chamber, said air pump being connected with said absorbing chamber at a point above the level oi the liquid therein, and the water pump being connected to said absorbing chamber adjacent the level of the liquid therein.

Signed this 15th day of October, 1908.

DAVID T. l'Vllilil AMS.

to protect b v VJitnesses:

VALTER S. JONES, EDW. W. VAILL, Jr. 

